Just so you know, absolutely none of that is true.
https://en.wikipedia.org/wiki/Pyramidion_of_Amenemhat_III
I don’t know if the person who posted that is sincere or not, but plenty of people sincerely believe this sort of thing when it is posted on Facebook.
There’s also that greenish-glass like that was theorized to have been made by a meteorite impact in the desert.
Ah yes, here we go: Libyan desert glass
Ooh I haven’t heard of this or desert glass in general before, new rabbit hole! Thanks!
Enjoy!